Curtain-stretcher structure.



i PATENTED 001?.1s,190 1. J.G.WHIPPLB. v

CURTAIN STRETOHBR STRUCTURE.

APPLICATION FILED JULY 2 4. 19 03.

NO MODEL.

- Jam 0 UNITED STATES Patented October 18,1904.

PATENT OFFICE.

JAMES Cl VVHIPPLE, OF CHICAGO, ILLINOIS.

CURTAIN-STRETCHER STRUCTURE.

SPECIFICATION forming part of Letters Patent No. 772,687, dated October 18 1904:.

' Application filed July 24:, 1903.

T ail whom it may concern: I

Be it known that I, JAMES C. WHIPPLE, a citizen of the United States, residing at Chicago, inthe county of Cook andState of Illinois, have invented a certain new and useful Improvement in Curtain Stretcher Structures, of which the followingis a'full, clear,

made of some suitable kind of wood. and is.

It is also made with a cut-away corner a. provided with a slot (0, which extends in- Wardly on a level with the horizontal face (0 forming-the lower side of the recess a. The

bar Ais also provided witha'vertical slot a,

cut in the face or surface (0 The pin B comprises a base consisting of side portions Z) Z), afront portion Z), rear portions Z2 If, and an upright pin proper, 6, connected by a portion 6 with the rear portion 6 the whole structure, base, and the pin proper being desirably made of a single piece of wire bent into the form described, as shownin Fig. 3. The front portion 6' is lower than the remaining portions'of the base, being con"- nected with the sides Z) Z) by downwardly-extending portions Z2 6. The pin B fits upon the bar A, as shown in Figs. 1 and 2, thesides I) b and rear portions 6 I2 fitting into the slot a of the-bar and the front portion .7) and downwardly-extending portions b 6 fitting into the slot The pins when so fitted upon the bar are free to slide longitudinally of the latter, as ,desiredand required in curtainstretcher structures. It will be seen that the pin oflers a firm resistance to' being pulled Fig. 2 is a cross-section of the- Fig. 3 is a perspective View ofthe pin.

Serial No. 166,826. (No model.)

from the bar by the arrangement of thefront portion 5 in the slot It will also be seen that the rear portion of the base being confined in the slot (0 prevents the pin from bee ing withdrawn by being lifted upwardly from the bar. It will also be seen that the tensile strain on the pin is directly in a horizontal line along the portion 6 and sides 6 b and that consequently there is no tendency to bend the pin proper, as is often the case in stretcherbar constructions. It will also be seenthat the sliding pin binds upon the bar in three places when the strain of thecurtain is upon it: first, the front of the portion 6 binds against the front of the groove (0 second, the front of the portion Z2 binds against the surface (fi, and, third, the rear of the pin-base binds against the lower surface of the overhang of. the bar. All this exercises a strong influence to hold the pin against sliding movement.

It will be understood that changes and modifications can be made without departing from the spirit of my invention.

What'I claim is- 1. The combination of a curtain-stretcherbar having a surface on which the pin-bases can rest and along which they can slide, said base-arranged to rest and slide upon said surface and adapted to have its rear portion en.-

gaged by said means on the bar, the pin-base being provided with alateral projection adapted to fit and slide in the slot in said surface, substantially as described.

I 2; The combination of a curtain-stretcher bar having a longitudinal surface for the pinbases, and also having an overhanging portion projecting over the rear of said surface so as to form a slot or groove between said surface and overhang, said surfacebeing also provided with a longitudinally-extending slot, and pins having bases adapted to rest and slide upon said surface and to fit under said overhang in the rear of said slot, and constructed with lateral projections adapted to lit and slide bases are engaged by the overhang in the rear of their engagement with said slots, substantially as described.

3. The combination with curtain-stretcher pins provided with bases having lateral projections, of a curtain-stretcher bar having a surface on which the bases of said pins can rest and slide, said bar being provided with means for engaging the lateral projections on said pin-bases, and also with means for engaging the bases in the rear of said projections, substantially as described.

4. The combination of a curtain-stretcher bar A provided with a flat surface a and an overhanging portion forming a slot (1 between itself and the surface a, the latter being provided with a longitudinal slot (1., and curtain-stretcher pins Bhaving bases adapted to fit between the surface a and said overhang and constructed with a downwardly-extending projection b, L and 6 adapted to fit and slide in the slot (4", and located forward of the rear end of the bases, substantially as described.

5. The combination of a curtain-stretcher bar having a corner cut away to form a flat surface (6 provided with a slot a said bar being also constructed with an overhang forming between itself and the surface a a slot a, pins B, each consisting of a base formed by sides 7), 5, rear portions 6 6 a downwardlyextending front projection formed near the front of the base of portions 6 b and 6:, and a pin proper 6* connected by a portion 6" with the rear portion 6 substantially as described.

6. A curtain-stretcher bar constructed with a surface for the pin-bases, said surface being provided with a longitudinally-extending slot or groove located between the front and rear of said surface, substantially as described.

7. A curtain-stretcher bar provided with a surface for the pin-bases, said surface being provided between its front and rear with a longitudinally-extending slot or groove, and the bar being provided with means for engaging the pin-bases in the rear of said slot, substantially as described.

8. A curtain-stretcher bar constructed with a surface (0 having a slotw between the front and rear of said surface, and also constructed with an overhanging portion forming between itself and the surface a a slot a, substantially as described.

9. A pin for curtain-stretchers comprising a pin proper, a pin-base carrying the pin, said base being provided with a lateral projection between its front and rear, substantially as described.

10. A pin for curtain-stretchcr bars comprising apin proper, a base carrying the pin, and a downwardly-extending projection carried by said base between its front and rear, substantially as described.

11. A pin for curtain-stretcher bars comprising a pin proper Z). a base carrying the pin proper, and a downwardly-cxtending projection consistingof portions 6, Wand b, said projection being located between the front and rear of the base, substantially as described.

12. A pin for curtain-stretcher bars comprising a pin proper 7/, and an inte rallyformed base consisting of a portion d", sides 6, 6, rear portions 5 I), and a downwardly-extending projection consisting of portions 1/, b and b, said projections being located between the front and rear of the base, substantially as described.

In witness whereof I hereunto subscribe my name this 21st day of July, A. D. 1903.

JAMES C. WIIIPPLE.

Witnesses:

A. MILLER BELFIELD, F. C. BARRY. 

